Running is one of the most accessible and health-promoting activities available, and one of the most injury-prone. Up to 50% of regular runners sustain at least one injury each year. If you've ever been forced to take time off from running, you'll know how frustrating it is. The good news is that the majority of running injuries are predictable, preventable, and driven by factors within your control.
The Most Important Reframe: It's Usually Not Your Form
The most persistent myth in running injury prevention is that injuries happen because of how you run. Poor technique plays a role in some cases, but the evidence consistently points to training errors as the primary driver. More specifically: injuries occur when the load being placed on your body exceeds its current capacity to handle that load. This framing, load versus capacity, changes everything. It means the question is not just "am I running correctly?" but "is my body prepared for the demands I'm placing on it?" And crucially, capacity can be built.
The Most Common Injuries, and What They Have in Common
Research tracking thousands of runners consistently identifies the same conditions appearing most frequently: Patellofemoral pain syndrome (runner's knee) is the single most common presentation, responsible for nearly 17% of all running injuries by prevalence. Pain under or around the kneecap, typically worse on stairs, downhill running, and after periods of sitting, usually driven by insufficient quad and glute capacity relative to running load. Medial tibial stress syndrome (shin splints) accounts for around 9–10% of injuries, particularly in newer runners and those who have rapidly increased volume. The periosteum (bone lining) is being stressed beyond its adaptive capacity. Achilles tendinopathy is the leading injury by incidence in non-ultramarathon runners (see our dedicated blog on this one, it deserves its own deep dive). Iliotibial band syndrome is the most common cause of lateral knee pain in runners, linked to hip abductor weakness and rapid increases in mileage. Plantar fasciitis, that classic first-steps-in-the-morning heel pain, affects around 6–8% of runners and is closely associated with inadequate calf capacity and sudden training load spikes. What these conditions share: they are overuse injuries driven by load exceeding capacity, most often triggered by training errors.
The Three Most Common Training Mistakes
1. Increasing Load Too Quickly The "10% rule", the idea that you should never increase weekly mileage by more than 10%, has been widely taught but is not as robustly supported by evidence as once thought. What the research does clearly show is that sudden, large spikes in training load dramatically increase injury risk. Runners who increased their average weekly distance by more than 30% compared to a baseline period were significantly more injured than those who progressed more conservatively. Recent large-scale data also suggests that a single over-ambitious long run, a one-session spike rather than a gradual weekly build, may be particularly dangerous. The practical takeaway is not a rigid percentage but a principle: progressive, manageable increases with adequate time for adaptation between loading spikes. 2. Ignoring Early Warning Signs Runners are, as a group, highly motivated to train through discomfort. The distinction that matters is between the expected adaptation discomfort of a hard session and the localised, persistent, or worsening pain that signals a tissue being overwhelmed. Runners with a previous injury history carry up to twice the injury risk of those without, largely because early warning signs were dismissed until the problem became impossible to ignore. A sharp pain that appears consistently at the same point in a run, stiffness that worsens rather than eases as a session progresses, or pain that is still present the following morning: these are signals worth acting on early, not later. 3. Neglecting Strength Training Running is a single-leg activity, every stride involves landing on one leg and absorbing several times your bodyweight in force. If the muscles responsible for absorbing and controlling that load are underprepared, the load gets transferred to less resilient structures: tendons, bones, and joint surfaces. Weakness in the glutes, hip abductors, quads, and calf complex is a consistent finding in runners who sustain overuse injuries. Strong glutes prevent the medial knee collapse (valgus stress) associated with patellofemoral pain and IT band syndrome. Strong calves and an adequate Achilles capacity are the first line of defence against the two most common lower-leg injuries. Yet the majority of recreational runners do no structured strength work at all.
Prevention in Practice
Progressive load management is the foundation. This means planning your training with an awareness of both volume (total mileage) and intensity, and building in recovery weeks, typically every third or fourth week, to allow adaptation to occur. Spreading additional mileage across multiple sessions rather than concentrating it in a single long run is a practical strategy supported by recent data. Strength training, two sessions per week targeting the posterior chain (glutes, hamstrings, calves) and single-leg stability. Key exercises include: single-leg squats, Romanian deadlifts, hip abductions, and heavy slow calf raises. These are not just injury prevention, they improve running economy, meaning you run faster and further for the same effort. Monitoring fatigue and recovery is underrated but important. Poor sleep independently elevates injury risk and slows tissue adaptation. High life stress has the same effect, your body's capacity to absorb training load is not fixed; it varies with how well you are recovering. Tracking morning resting heart rate, sleep quality, or perceived readiness gives you data to adjust training before problems emerge. Respecting the early warning signs means acting at a 3 out of 10, not a 7. A single session modified early costs you almost nothing. A full injury costs you weeks or months.
Who Is Most at Risk?
- Novice runners, those new to running or returning after a significant break, whose tissues haven't yet adapted to the demands of the sport
- Marathon and half-marathon trainees, building to race distances often involves the largest and fastest load increases
- Runners who only run, without cross-training or strength work to build broader capacity
- Those with a previous injury history, prior injury is the single strongest predictor of future injury
How IP Physio Can Help
We work with runners at every stage, from those just starting out, to experienced runners preparing for race season, to those dealing with an injury that has already developed. Our approach starts with assessment: we look at your running load history, your strength and movement capacity, and where the mismatch between the two is occurring. We use objective strength testing to quantify deficits in the calf, quad, and glute complex, because knowing exactly where capacity is insufficient allows us to address it precisely rather than generically. From there, we build a plan that does two things simultaneously: manages your current symptoms intelligently, and systematically raises your capacity so the same load no longer exceeds what your body can handle. Where appropriate, we work with your training plan directly, advising on load progression, identifying the sessions that are most and least likely to cause problems, and giving you the tools to monitor your own response to training. The goal is not just to get you back running. It is to make you a more resilient runner who understands their body well enough to stay that way. If you're dealing with a running injury or want to get ahead of one, get in touch with us today.
References
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